This is an asylum/immigration crisis and EU is a group of countries whose views on asylum and immigration politics are very divergent.

It is likely that the current model of (ab)using asylum laws to facilitate mass migration into the richest EU countries is unsustainable, but any viable reform of the status quo will still hit against the Scylla and Charybda of "we do not want any more third-worlders of unclear identity here" (basically the Polish or Danish position) vs. "it is our duty to seriously process and examine every single asylum application even if we cannot return rejected applicants to their countries of origin" (the German position).